Semi-Automatic Winding Machine for Battery Electrode Assembly

1. Equipment Description:

This machine is mainly used for precision winding of cylindrical lithium-ion battery cells.

Working process: Manually feed cathode and anode sheets into the winding section, interleave them with the separator, wind according to process requirements, automatically attach termination tape, and automatically discharge the finished cell.

2. Equipment Functions and Features

*Adopts a single-needle through-shaft winding structure.
*Operational process: Manual electrode feeding, by automatic winding, needle replacement, tape application, and discharging.
*Utilizes a lateral taping method (with termination tape applied perpendicular to the tabs), ensuring flat, precisely positioned tape application without over-tightening the cell, and delivering reliable, stable performance.
*Winding speed is adjustable.
*Equipped with two active separator rolls, featuring proximity switch-controlled tension; enables smooth automatic adjustment during winding, with support for both upper and lower tension adjustments.
*The separator is wrapped externally at the end of the process.
*Wound cells are free from damage, core displacement, or electrode misalignment.
*Offers easy operation and rapid specification switching.

3. Process Flow

The equipment meets the cylindrical lithium-ion battery winding standard: separator fully wraps the anode, anode wraps the cathode.

Process flow:

1. Separator pre-winding: Uses toothed blade to reduce separator length and avoid thread-pulling and cell bulge.

2. Feed anode: Manually feed into winding unit.

3. Feed cathode: Manually feed into winding unit.

4. Winding.

5. Transfer to taping station.

6. Separator cutting, taping, and discharging.

	W	D	L
Tolerance (mm)	<0.5	<0.3	<1000

 

4. Equipment Composition

1. Includes winding device, position shifting unit, separator unwinding unit, electrode guide unit, taping unit, discharging unit, and control system.

2. Winding device (2 sets): single-head through-shaft ensures accuracy; easy needle replacement.

3. Position shifting unit (1 set): for switching between winding and taping positions.

4. Separator unwinding unit (2 sets): active unwinding, pneumatic tension control.

5. Electrode guide unit (2 sets): adjustable single-side alignment.

6. Taping and discharging unit (1 set).

 

5. Technical Specifications

l Separator width: 5–15 mm

l Winding needle size: ∮1.0–∮6.0 mm (customized)

l Electrode width: 3–13 mm

Material Specifications (mm):

Material	Length	Width	Thickness	ID	OD
Cathode	40–1000	3–13	0.1–0.2	—	—
Anode	—	—	—	—	—
Separator	Roll	5–15	0.010–0.045	76.2	250
Termination Tape	Roll	5–15	0.01–0.035	76.2	150

l Capacity: 8–15 pcs/min (depending on electrode size)

l Winding accuracy:

¢ Electrode width deviation < ±0.2 mm

¢ “S” curve deviation < ±1 mm/500 mm

¢ Separator roll tower deviation < ±0.2 mm

¢ Final alignment: separator and electrode < ±0.5 mm

¢ Anode wraps cathode, separator wraps anode, end face alignment < ±0.5 mm

l Pass rate: ≥98% (excluding non-equipment factors)

 

6. Technical Standards

Category	Specification	Remarks
Power Supply	AC220V, 1.5KVA, 50Hz
Air Source	0.4–0.6 MPa
Production	8 pcs/min
Weight	~500 kg
Dimensions	1660×1300×1570 mm (L×W×H)	Feeder not included
Needle Spec	∮1.0–6.0 mm	One set provided, customizable
Frame	1 set
Winding Unit	1 set
Electrode Feed Unit	2 sets
Separator Feed Unit	2 sets
Taping Unit	1 set
PLC	Panasonic AFRX-C60T
HMI	MCGS, 7-inch color screen
Winding Motor	Panasonic Servo Motor
Tension Motor	Leadshine/ResearchControl Stepper Motor
Sensors	Panasonic
Pneumatics	Airtac
Fault Stop	Supported
Fault Alarm	Built-in with one-touch reset
Manual	1 set
Spare Parts	1 set	Refer to delivery list